Screwless knob.



A. ARBHS. SUBBWLESS KNOB.

APPLIGATIOK FILED SEPT. B, 1908.

Patented July 6, 1909 i i i "4,

W may. @2222,

UNITED STATES PATENT OFFICE.

AUGUST ARENS, OF NEW BRITAIN, CONNECTICUT, ASSIG'NOR TO I. & F. CORBIN,OF NEW BRITAIN, CONNECTICUT, A CORPORATION'OF CONNECTICUT.

SOREWLE SS KNOB Specification of Letters Patent.

Patented July 6, 1909.

Application filed September 8, 1908. Serial No. 451,980.

To all whom it may concern.

Be it known that I, AUGUST ARnNs, a citizen of the United States,residing at New Britain, county of Hartford, State of Connecticut, haveinvented certain new and useful Improvements in Screwloss Knobs, ofwhich the following is a full, clear, and exact description.

My invention relates to door knobs, particularly of the type termedscrewlcss knobs.

The object of the invention is to provide a simple, effective anddurable construction.

In the main, my invention constitutes an improvement upon theconstruction made the subject matter of my former patent No. 778,942 ofJanuary 3, 1905, the present invention simplifying said construction andreducing the number of parts necessary to the complete article.

Figure 1 is a relatively enlarged longitudinal, sectional view of myimproved knob and its associated parts, the knob proper being upon thespindle but not connected. In this View, certain of the parts are shownin elevation. Fig. 2 is an end elevation of one of the details detached.Fig. 3 is an end elevation of another of the details detached.

1 represents a knob spindle of the usual cross-sectional outline andscrew threaded at its corners.

2 represents an escutcheon plate designed to be carried by a door.

3 represents the grip portion of a knob.

4 represents what I may termthe clamping member or sleeve, the sameconstituting the knob shank when the parts are assembled.

5 represents an adjusting member having an annular shoulder 6 arrangedabout midway of its length.

77 are slots cut into the outer end of the adjusting member 5. Bypreference, four of these slots are provided.

The knob 3 is rovided with an angular spindle passage w ereby, when theknob is upon the spindle 1, it is held from turnin a though it may slidethereon. This spind e passage is eounterbored, so that the inner end ofthe knob will slide over the slotted outer end of the adjusting member 5when the pints are in position or in the act of assem- 8 is a key or sline adjacent to the wall of the counterbore portion of the knob 3 andarranged to slide into any one of the slots 7 as the parts are beingassembled. This spline may be economically formed by means of a pin asshown in Fig. 1, the same being held rigidly in a hole bored in the knobat the rear of the counterbore.

9 is an external thread at the inner end of the knob arranged to receivethe internally threaded part of the clam ing sleeve 4.

Having thus identified the various parts of my invention, the same wouldbe assembled as iollows:The s indie 1 which carries the usual knob (nots iownl at one end. is slid through the door and through the escutchoon2, as shown in Fig. 1. The clamping sleeve 1 is then put into place, thesame taking a suit able bearing within the escutchcon The adjustingmember 5 is then screwed onto the shank until the annular shoulder 6takes up against the shoulder within the clamping sleeve 4, the turningin of said adjusting member being continued until the said sleeve 4bears properly against the rose or escutchcon 2. This adjustment shouldnot be so tight as to revent free turning and yet should be suin-ientlysnug to prevent loosenose or rattling. The adjusting sleeve is now sodisposed upon the spindle 1 that when the knob 3 is placed thereon, thes )line 8 will line up with one of the slots 7. It hen the knob isplaced upon the spindle 1, it is pushed forward until said spline entersone of said slots and until the threaded portion 9 of the knob entersthe internally threaded portion of the sleeve 4. The operator then turnsthe sleeve 4 in a direction to draw the knob into its final osition inwhich position it will be frictiona 1y held against displacement.Inasmuch as the spline 8 stands in one of the slots 7 in the adjustingdevice, and inasmuch as the knob 3 cannot turn on the spindle 1, itfollows that the adjusting sleeve 5 will not be turned with the clam)ing sleeve 4 as the same is being rotated. here, formerly, as set forthin my earlier patent above referred to, it required a separate lockingwasher to revent the adjusting member from turning, y my presentimprovement I have eliminated this element, the knob itself serving tolock the adjusting sleeve against rotation when the parts are beingdrawn together or moved apart by the proper rotation of the clampingsleeve 4.

What I claim is 1. In a device of the character described, a knob, arotatable internally shouldered clamping sleeve constructed to bescrewed on to said knob, a spindle, an adjusting device screw-threadedthereon, said adjusting device having an external shoulder inter1nediateits length arranged to engage the internal shoulder of the clampingsleeve, and a recess in the outer end thereof, a knob slidable but notrotatable on said spindle and having a recess at its inner end toreceive the outer end of said adjusting device, and a key on said knobwithin said recess and arranged to engage said adjusti-n device toprevent the rotation thereof Whi-e said parts are being connected ordisconnected.

2. In a device of the character described, a knob, a rotatableinternally shouldered clamping sleeve constructed to be screwed on tosaid knob, a spindle, an adjusting device screw-threaded thereon, saidadjusting device having an external annular shoulder intermediate itslength arranged to engage the internal shoulder of the clamping sleeve,and a plurality of recesses in the outer end thereof, a knob slidablebut not rotatable on said spindle and having a recess at its inner endto receive the outer end of said adjusting device, and a key on saidknob Within said recess and arranged to engage the recessed portlon ofsaid adjusting device to prevent the rotation of the latter duning theattachment -or detachment of the knob.

AUGUST ARENS.

